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| 高纯TiO2超微粉体的制备 | |
| 引用本文： | 吴南,马伟民,毕孝国,管仁国,朱红艳,滕飞.高纯TiO2超微粉体的制备[J].人工晶体学报,2012,41(2):485-490. |
| 作者姓名： | 吴南 马伟民 毕孝国 管仁国 朱红艳 滕飞 |
| 作者单位： | 1. 沈阳化工大学材料科学与工程学院,辽宁省稀土化学及应用重点实验室,沈阳110142;沈阳工程学院能源与动力工程系,沈阳110136 2. 沈阳化工大学材料科学与工程学院,辽宁省稀土化学及应用重点实验室,沈阳110142 3. 沈阳工程学院能源与动力工程系,沈阳,110136 4. 东北大学材料与冶金学院,沈阳,110004 |
| 基金项目： | 辽宁省教育厅重点实验室项目，沈阳市科技攻关计划项目 |
| 摘 要： | 以廉价的TiCl4为原料,液体石蜡为纯化剂,氨水作形核剂,制备出高纯TiO2超微粉体。用XRF分析了样品的物相组成;XRD和SEM等手段表征了粉体合成过程的物相变化和形貌特征。结果表明,TiCl4经过矿物油(液体石蜡)除钒和精馏除铁等杂质后进行水解,当TiCl4溶液浓度0.65 mol/L,水解温度60℃、反应时间2 h、pH值=7、在800℃煅烧2 h条件下,制备出TiO2的纯度达到99.9952%,晶型为金红石相,晶粒尺寸约0.65μm,形貌近球形。 |
| 关 键 词： | TiO2 物相变化 水解法 金红石相 |
Preparation of High-purity TiO2 Ultra-fine Powders |
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| WU Nan , MA Wei-min , BI Xiao-guo , GUAN Ren-guo , ZHU Hong-yan , TENG Fei.Preparation of High-purity TiO2 Ultra-fine Powders[J].Journal of Synthetic Crystals,2012,41(2):485-490. | |
| Authors: | WU Nan MA Wei-min BI Xiao-guo GUAN Ren-guo ZHU Hong-yan TENG Fei |
| Institution: | 1 (1.Key Laboratory for Rare-earth Chemical and Applying,Liaoning Province,School of Material Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;2.School of Energy and Power Engineering,Shenyang Institute of Engineering,Shenyang 110136,China;3.Institute of Metallurgy and Materials,Northeastern University,Shenyang 110004,China) |
| Abstract: | The high-purity TiO2 ultra-fine powders were prepared by TiCl4 hydrolysis using low-cost TiCl4 as raw materials,liquid olefin as purifier and NH3· H2O as nucleation agent.The phase composition of the sample was analyzed by XRF;The phase transformation and morphology character of the powders were studied by XRD and SEM during preparation of TiO2 particles.The results indicated that TiCl4 was purified by liquid olefin in order to wipe off vanadium,in the meantime removed iron by the method of rectification,after which TiCl4 was forced to proceed a hydrolysis reaction.The powders whose purity is 99.9952% are approximately 650 nm spherical particles with good and crystalline phase is rutile under the condition of n(Ti4+)=0.65 mol/L,pH=7,treated at 60 ℃ for 2 h and calcined at 800 ℃ for 2 h. |
| Keywords: | TiO2 phase transformation hydrolysis method rutile phase |
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